CIFS: Add open/close file support for SMB2 (f0df737e) · Commits · e / devices / android_kernel_fairphone_FP4

fs/cifs/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -17,4 +17,4 @@ cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
		cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o

		cifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
		smb2misc.o smb2pdu.o smb2inode.o
		smb2misc.o smb2pdu.o smb2inode.o smb2file.o

fs/cifs/cifsglob.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -757,6 +757,10 @@ struct cifs_search_info {

		struct cifs_fid {
		__u16 netfid;
		#ifdef CONFIG_CIFS_SMB2
		__u64 persistent_fid; /* persist file id for smb2 */
		__u64 volatile_fid; /* volatile file id for smb2 */
		#endif
		};

		struct cifsFileInfo {

fs/cifs/smb2file.c

0 → 100644

+86 −0

Original line number	Diff line number	Diff line
		/*
		* fs/cifs/smb2file.c
		*
		* Copyright (C) International Business Machines Corp., 2002, 2011
		* Author(s): Steve French (sfrench@us.ibm.com),
		* Pavel Shilovsky ((pshilovsky@samba.org) 2012
		*
		* This library is free software; you can redistribute it and/or modify
		* it under the terms of the GNU Lesser General Public License as published
		* by the Free Software Foundation; either version 2.1 of the License, or
		* (at your option) any later version.
		*
		* This library is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
		* the GNU Lesser General Public License for more details.
		*
		* You should have received a copy of the GNU Lesser General Public License
		* along with this library; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/
		#include <linux/fs.h>
		#include <linux/stat.h>
		#include <linux/slab.h>
		#include <linux/pagemap.h>
		#include <asm/div64.h>
		#include "cifsfs.h"
		#include "cifspdu.h"
		#include "cifsglob.h"
		#include "cifsproto.h"
		#include "cifs_debug.h"
		#include "cifs_fs_sb.h"
		#include "cifs_unicode.h"
		#include "fscache.h"
		#include "smb2proto.h"

		int
		smb2_open_file(const unsigned int xid, struct cifs_tcon tcon, const char path,
		int disposition, int desired_access, int create_options,
		struct cifs_fid fid, __u32 oplock, FILE_ALL_INFO *buf,
		struct cifs_sb_info *cifs_sb)
		{
		int rc;
		__le16 *smb2_path;
		struct smb2_file_all_info *smb2_data = NULL;

		smb2_path = cifs_convert_path_to_utf16(path, cifs_sb);
		if (smb2_path == NULL) {
		rc = -ENOMEM;
		goto out;
		}

		smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
		GFP_KERNEL);
		if (smb2_data == NULL) {
		rc = -ENOMEM;
		goto out;
		}

		desired_access \|= FILE_READ_ATTRIBUTES;

		rc = SMB2_open(xid, tcon, smb2_path, &fid->persistent_fid,
		&fid->volatile_fid, desired_access, disposition,
		0, 0, smb2_data);
		if (rc)
		goto out;

		if (buf) {
		/* open response does not have IndexNumber field - get it */
		rc = SMB2_get_srv_num(xid, tcon, fid->persistent_fid,
		fid->volatile_fid,
		&smb2_data->IndexNumber);
		if (rc) {
		/* let get_inode_info disable server inode numbers */
		smb2_data->IndexNumber = 0;
		rc = 0;
		}
		move_smb2_info_to_cifs(buf, smb2_data);
		}

		out:
		*oplock = 0;
		kfree(smb2_data);
		kfree(smb2_path);
		return rc;
		}

fs/cifs/smb2inode.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -54,7 +54,7 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,

		rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
		desired_access, create_disposition, file_attributes,
		create_options);
		create_options, NULL);
		if (rc) {
		kfree(utf16_path);
		return rc;
		@@ -86,7 +86,7 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
		return rc;
		}

		static void
		void
		move_smb2_info_to_cifs(FILE_ALL_INFO dst, struct smb2_file_all_info src)
		{
		memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);

fs/cifs/smb2ops.c

+21 −1

Original line number	Diff line number	Diff line
		@@ -170,7 +170,7 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
		return -ENOMEM;

		rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
		FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0);
		FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, NULL);
		if (rc) {
		kfree(utf16_path);
		return rc;
		@@ -292,6 +292,23 @@ smb2_print_stats(struct seq_file m, struct cifs_tcon tcon)
		#endif
		}

		static void
		smb2_set_fid(struct cifsFileInfo cfile, struct cifs_fid fid, __u32 oplock)
		{
		/* struct cifsInodeInfo cinode = CIFS_I(cfile->dentry->d_inode); /
		cfile->fid.persistent_fid = fid->persistent_fid;
		cfile->fid.volatile_fid = fid->volatile_fid;
		/* cifs_set_oplock_level(cinode, oplock); */
		/* cinode->can_cache_brlcks = cinode->clientCanCacheAll; */
		}

		static int
		smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
		struct cifs_fid *fid)
		{
		return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
		}

		struct smb_version_operations smb21_operations = {
		.setup_request = smb2_setup_request,
		.setup_async_request = smb2_setup_async_request,
		@@ -322,6 +339,9 @@ struct smb_version_operations smb21_operations = {
		.mkdir_setinfo = smb2_mkdir_setinfo,
		.rmdir = smb2_rmdir,
		.unlink = smb2_unlink,
		.open = smb2_open_file,
		.set_fid = smb2_set_fid,
		.close = smb2_close_file,
		};

		struct smb_version_values smb21_values = {